package javaStaticDemo2;

public class ArrayUtil {
    private ArrayUtil(){};


    public static String printArr(int[] arr){
        StringBuilder sb=new StringBuilder();
        sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if(i== arr.length-1){
                sb.append(arr[i]).append("]");
            }
            else{
                sb.append(arr[i]).append(",");

            }
        }
        return sb.toString();
    }
    public static double getAverage(double[] arr){
        double sum=0;
        for (int i = 0; i < arr.length; i++) {
            sum+=arr[i];
        }
        return sum/arr.length;
    }

}
